Home / 30,322.89-41,812.16-20,764.35

Finding the Fourth Proportional to 30,322.89, 41,812.16 and 20,764.35

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Solution

The fourth proportional to 30,322.89, 41,812.16 and 20,764.35 is: 28,631.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,322.89 : 41,812.16 = 20,764.35 : x
  2. Step 2: Convert to fraction form
    30,322.89/41,812.16 = 20,764.35/x
  3. Step 3: Cross multiply
    30,322.89x = 41,812.16 × 20,764.35
  4. Step 4: Simplify right side
    30,322.89x = 868,202,220.67
  5. Step 5: Solve for x
    x = 868,202,220.67/30,322.89
  6. Step 6: Final answer
    x = 28,631.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.